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Q118
(CAPF/2026)
Science & Technology › Basic Science (Physics, Chemistry, Biology)
Which one of the following does not generally obey Hooke's law?
Result
Your answer:
—
·
Correct:
C
Explanation
Hooke's law states that the strain in a solid is proportional to the applied stress within the elastic limit of that material. For a material to obey Hooke's law, it must exhibit elasticity—the property of a body to resume its original shape and size when the deforming forces are removed.
- Copper, Quartz, and Glass are elastic materials that follow Hooke's law within their respective elastic limits.
- Clay is a plastic material. Plastic materials do not show a tendency to regain their original configuration after the removal of deforming forces; they undergo permanent deformation even under small loads. Because clay lacks a linear elastic region and does not exhibit a proportional relationship between stress and strain, it does not generally obey Hooke's law.
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